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Q. No.Given below are two statements:
| Assertion (A): | Viroids are different from viruses. |
| Reason (R): | Viroids lack capsid but viruses posses capsid. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Â Virus, Viroids & Prions |
 83%
Level 1: 80%+
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Assertion: Cell wall of diatoms are indestructible
Reason: Cell wall of diatoms possesss silica
1. If both assertion and reason are true and the reason is the correct explanation of the assertion
2. If both assertion and reason are true and the reason is not the correct explanation of the assertion
3. If assertion is true but reason is false
4. If both assertion and reason are false statement
Reason: Cell wall of diatoms possesss silica
1. If both assertion and reason are true and the reason is the correct explanation of the assertion
2. If both assertion and reason are true and the reason is not the correct explanation of the assertion
3. If assertion is true but reason is false
4. If both assertion and reason are false statement
Subtopic: Â Kingdom Protista: Chrysophytes |
 95%
Level 1: 80%+
Hints
Links
Assertion: Viruses are obligate parasites
Reason: Viruses cannot propagate outside the host cell
1. If both assertion and reason are true and the reason is the correct explanation of the assertion
2. If both assertion and reason are true and the reason is not the correct explanation of the assertion
3. If assertion is true but reason is false
4. If both assertion and reason are false statement
Reason: Viruses cannot propagate outside the host cell
1. If both assertion and reason are true and the reason is the correct explanation of the assertion
2. If both assertion and reason are true and the reason is not the correct explanation of the assertion
3. If assertion is true but reason is false
4. If both assertion and reason are false statement
Subtopic: Â Virus, Viroids & Prions |
 82%
Level 1: 80%+
Hints
| Assertion (A): | Mycoplasma is pathogenic, both to animas and plants. |
| Reason (R): | These organisms lack cell wall and can survive without oxygen. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Â Kingdom Monera: Actinomycetes & Mycoplasma |
 69%
Level 2: 60%+
Hints
Assertion: The archaebacteria can survive in harish habitats
Reason: These bacteria contain a different cell wall structure
1. If both assertion and reason are true and the reason is the correct explanation of the assertion
2. If both assertion and reason are true and the reason is not the correct explanation of the assertion
3. If assertion is true but reason is false
4. If both assertion and reason are false statement
Reason: These bacteria contain a different cell wall structure
1. If both assertion and reason are true and the reason is the correct explanation of the assertion
2. If both assertion and reason are true and the reason is not the correct explanation of the assertion
3. If assertion is true but reason is false
4. If both assertion and reason are false statement
Subtopic: Â Kingdom Monera: Introduction |
 92%
Level 1: 80%+
Hints
| Assertion (A): | The spores of 'consumer-decomposer' protists contain cellulosic cell wall. |
| Reason (R): | These spores are dispersed by wind. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
| 3. | (A) is True but (R) is False |
| 4. | Both (A) and (R) are False |
Subtopic: Â Kingdom Protista: Chrysophytes |
 66%
Level 2: 60%+
Hints
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Assertion: Cyanobacteria are photosynthetic blue-green algae with all prokaryotic structures
Reason: They are green due to the presence of chloroplasts
1. If both assertion and reason are true and the reason is the correct explanation of the assertion
2. If both assertion and reason are true and the reason is not the correct explanation of the assertion
3. If assertion is true but reason is false
4. If both assertion and reason are false statement
Reason: They are green due to the presence of chloroplasts
1. If both assertion and reason are true and the reason is the correct explanation of the assertion
2. If both assertion and reason are true and the reason is not the correct explanation of the assertion
3. If assertion is true but reason is false
4. If both assertion and reason are false statement
Subtopic: Â Kingdom Monera: Introduction |
Level 3: 35%-60%
Hints
Read the following statements with respect to natural system of classification:
How many of the above statements are correct?
| (i) | It was given by George Bentham and Joseph Dalton Hooker |
| (ii) | It was based on natural affinities among the organisms |
| (iii) | It takes into account not only the external features but also internal features |
| (iv) | Internal features like ultrastructure, anatomy, embryology and phytochemistry are also considered |
| (v) | Evolution is also taken into account |
| 1. | Two | 2. | Four |
| 3. | Three | 4. | Five |
Subtopic: Â Kingdom Monera: Bacterial Classification |
 53%
Level 3: 35%-60%
Hints
Read the following statements about viroids:
(i) These were discovered by T.O Diener
(ii) These are of high molecular weight
(iii) Their RNA is of low molecular weight
(iv) May possess capsid
How many of the above statements are correct?
1. Two
2. One
3. Four
4. Three
(i) These were discovered by T.O Diener
(ii) These are of high molecular weight
(iii) Their RNA is of low molecular weight
(iv) May possess capsid
How many of the above statements are correct?
1. Two
2. One
3. Four
4. Three
Subtopic: Â Virus, Viroids & Prions |
 83%
Level 1: 80%+
Hints
Read the following statements with respect to Basidiomycetes:
How many of the above statements are correct?
1. Three
2. Four
3. Two
4. Five
| I: | Sex organs are commonly present |
| II: | Plasmogamy is brought about by the fusion of two vegetative or somatic cells of different strains or genotypes |
| III: | The dikaryotic structure may give rise to the basidium |
| IV: | Karyogamy and Meiosis take place in the basidium producing four ascospores |
| V: | The basidiospores are exogenously produced on the basidium |
1. Three
2. Four
3. Two
4. Five
Subtopic: Â Kingdom Fungi: Basidomycetes |
 62%
Level 2: 60%+
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